"...your visitor will have a limited amount of time (specified by you) to fill in the form and send it. And if a spammer tries to post information to your form processor remotely they’re going to hit a big fat roadblock."
"As we mature as developers, finding logic errors and incomplete solutions becomes our way of life. It defines us. But our engineering strength is also our social weakness." uhoh, I'm guilty of this sometimes. [via mathowie]
"...if after a few Ajax polls there’s no data, there probably won’t be for a while. Maybe the site is overloaded or the queue is backed up. In those circumstances the continued polling adds additional unwanted strain to the site." Another polling approach: increase the interval every time.
"And the greater risk is not of Flickr’s deletion of customers, but of the market’s deletion of Flickr. Because, after all, Flickr is a business and no business lasts forever. Least of all in the tech world." Valid concerns about Flickr, advertising, and how we fund the Web.